Re: Iver Johnson 57A TARGET .22 Revolver 8 Shot
The 57A was made from 1961-1975, it differed from the 57 as the A designated the new loading gate.
I would only use Standard Velocity ammo in it.
Absolutely NO HYPER-Velo stuff. (no Stingers, no yellowjackets)
You MIGHT be able to get away with High-velo...but you'll probably find it will respond a lot better to the subsonic
Standard target rounds.
A gun should be a tool in the hands of a deadly weapon, not a deadly weapon in the hands of a tool.